Dishwashing machine



, April 17, 1934. G" KQHLR 1,955,299

DISHWASHING MACHINE.

Filed May 7, 1931 2 Sheets-Sheet l INVENTOR FIRTHUKQKOHLEK BY HISATTORNEY April 17, 1934. A. G. KOHLER DISHWASHING- MACHINE Filed May 7.1931 2 Sheets-Sheet 2 H THU GPQHLE BY HIS ATTOR EY Patented 17, 1934UNITED STATES PATENT OFFICE 1,955,299 msnwasnme MACHINE Arthur G.Kohler, New York, N. Y.

Application May 7, 1931, Serial No. 535,677

Claims. (-01. 141-9) This invention relates to dish washing maof Figure5 showing the development of one of chines and in particular to onearranged to be the water passageways employedin the impeller. placedwithin a special tank or wash tub. Referring to the drawings in detail,5 indicates A particular object of my invention is to proa wash tube or'tank in which is housed my im- 5 vide a dish washing machine which isarranged proved washing machine. The machine is prop- 60 to be placed ina standard wash tub which is used erly'to be used in connection with theordinary for the washing of clothes and which is usually household washtube but if desired, a suitable placed adjacent a sink whereby themachine, tank m y be e p y d that can be pp d in as a unit when placedin the wash tub is conany suitable manner, it being understood thatcealed by the cover thereof but is ready for use the wash tub is supp re n ui l l a 65 to wash a number of dishes, cups, saucers and showing ofwhich iS not deemed necessaryeating utensils. The wash tub is usuallyprovided with the inner An advantage of my invention is that the drainsloping walls 6 and bottom '7 upon the latter of of the wash tub is usedto drain out the water which rests, the bottom portions 8 of a mainafter th i hes have been cleansed, means beframe 9. This main frame ismade of stout wire 70 ing provided for covering the drain opening instock and is bent at the corners as at 10 to fit the tube with asuitable automatic water levelling the curvature of the tub or tank inconnection device which permits filling of the tub to the with which themachine is employed. The main required depth for efficient operation ofthe frame 9 is composed of individual pieces of wire water impeller.stock which are bent to provide the bottom por- 75 A still further:object of my invention is to tions 8 which are soldered as at 11 orwelded in provide a compact machine comprising a main suitable slots toa center plug 13, the slots being and auxiliary frames, the latter ofwhich are disposed radially of the plug and the frame poremployed forthe support of dishes and the tions also extending radially to thecorners of former of which is arranged to support a cover the frame,where, as before mentioned, they are 80 which fits into the upper end ofthe tub or'tank curved as at 10 and slopedupwardly as at 14' to andprovides a watertight seal so that leakage provide the upstanding ends15 which are welded at the-upper part of the machine is prevented. orconnected in any suitable manner to the ex- A still further object of myinvention is to terior surface of the motor housing 16. A suit.

. provide within the machine, a watertight motor able reinforce ring 17is employed to strengthen s5 compartment and within the main frame, awater the bottom central portion of the main frame 9, impellerwhicheffectively sprays the water to while upper rings 18 and 18A areemployed for thoroughly cleanse the dishes and utensils. the purpose ofstrengthening the main frame and Changes and variations may be made inthe holding the same rigid and at the same time proconstruction shownand described without, deviding a support for the lower section 19 of anparting from the principles of the invention or auxiliary framecombination 20.

sacrificing its chief advantages; hence such in- The main frame 9 isprovided with the upvention is not to be confinedto the structuresstanding corner pieces or extensions 21 which shown in the accompanyingdrawings: are welded to or otherwise suitably secured to 40 Figure 1 isa view in sectional e1evation,'the the cover 22 at the corners thereof.The lower section being taken substantially on thelines section of theauxiliary frame or plate holding 1-1 of Figure 3 and the dish holdingframe frame is provided with a series of convolutions being omitted atone side of the view for clearconstituting rests for the edges of-theplates or ness of illustration. dishes. The inner end of the lowersection 19 g 45 Figure 2 is a section taken on the line 2-2 of may bewelded or otherwise secured to the motor Figure 1 illustrating theconstruction of the housing 16 and its convolutions 24 are longer drainand overflow member. and are disposed at an angle relatively differentFigure 3 is a top plan view of themachine, from the angle of theconvolutions 23 in the one-half of the cover being removed to illustrateouter extension of the lower section 19. This 50 the construction of theframes. lower section 19 rests on the ring 18 as heretofore Figure '4 isa view in sectional elevation of the noted and the lower section 19 haswelded or water impeller employed in the machine. otherwise securedthereto, the inner and outer Figure 5 is a top plan view of the waterimrings 25 and 26'respectively, which rings support peller illustratedin Figure 4, and the upper section 27 of the frame for holding 55 Figure6 is a section taken on the line 6-6 the plates and by referring toFigure 3, it will be I noted that the sections 27 and 19 are alternatelyspaced'peripherally of the rings 25 and 26 so that, as indicated inoutline in Figure 1, the lower sections of the plate holding frame 19support the lower edges of these plates while the convolutions of theupper section 27 support another portion of the plate or dish with theresult that the dishes are substantially supported in their verticalposition and at the proper angle so that the impelled water strikes themto remove the congealed matter on the plates quickly.

The outer ends of the sections 19 and 27 are extended upwardly as at 28and 29 respectively and are secured by the upper ring 30, it beingunderstood that the dish holding frame and the main frame 9, when themachine is completed, are a single unit and the entire machine is liftedout of the tub or tank in which it is disposed in a single piece.

The housing for the motor being supported as it is by the vertical end15 of the main frame 9, is held in the proper position to accommodatethedriving motor 31 which rests on the bottom 32 of the housing and hasits shaft 33 protruding through a suitable opening 34 in the bottom ofsaid housing. The shaft 33 has secured thereto, a sleeve 35, the upperend of which is secured to the impeller disk 36 in any suitable manner,the disk itself being shaped at its outer end to provide thecounterweight 37 at one side and the impeller nozzle 38 at the oppositeside. Both the counterweight 37 and the impeller nozzle 38 are segmental.in shape and extend through an arc of any number of degrees.

Referring to Figures 4, 5 and 6, it will be noted that the impeller disk36 is provided with an apron 39 to which is properly secured in anymanner the counterweight 37, while the disk 36 is provided with anintegral extension 40 providing a spiral flange 41 to which is securedas by welding or in any other suitable manner, the passage definingmember 42, the intake end 43 of which is provided with a horizontal vein44 to provide additional projection of the water in its passage throughthe water or liquid 45 of the tank. The passage defining member 42 isbent upon itself as at 46 at spaced points to define water passages,these spaced points being also welded to the flange 41 of the impellerdisk A so that a plurality of passages are provided which extendspirally of the impeller disk and have their outlet end disposed invertical position as at dl', it being understood that the curvature ofthe passages depends upon the curvature of the flange 41 which is shapedas indicated, while the upstanding wall 418 of the impeller diskadjacent the outlet end of the impeller nozzle is extended as at 49 toprovide a reinforce for the nozzle.

The cover 22 has hinged thereto as at 50, the lid 51, the cover 22 andthe lid 51 forming a closure at the top of the machine when the same isplaced in a tub or tank and being provided with the depending flanges 52which are curved slightly outward at their lower edges as at 53 and havesecured thereto in any suitable manner, the waterproof packing 54 forthe purpose of sealing the machine in the tub or tank in which it isdisposed. The hinge consists of the hinge pin 55 and the tops of thecover 22 and lid 51 are curled about the hinge pin 55 to provide theusual hinge joint, the parts being movably joined and reinforced by theflexible strap members 56 which are secured in any suitable manner attheir ends to the lid and cover 51 and 22 respectively. The member 56 isa continuous strip extending across the entire cover and lid, but may bemade in pieces placed at spaced points, if so desired. A furtherfunction of this member is to prevent leakage of water when the same isthrown against the bottom of the cover by the impeller. The cover 22carries the metal strip 58 which is engaged in its extended portion bythe spring clip 59 carried by the lid 51 so that the lid is heldforcibly closed during a dish washing operation.

The cover 22 is provided with a watertight gasket 60 through whichpasses the operating lever 61, whose upper end is turned in a horizontaldirection and carries the handle 62 whose operation is limited throughthe medium of the stop plugs 63 mounted in the cover 22. The lower endof this operating lever 61 is bent horizontally as at 65 and partlyencircles the combination drain and overflow cup 66 which, asillustrated in Figure 2, is provided with an overflow opening 6'7 whichprevents the water 45 in the tub from becoming higher than desired sothat the efficiency of the machine is not affected. This overflow cup ispreferably of cylindrical formation and its bottom end is open andarranged to fit over the drain opening 68 in the bottom of the tub ortank, it being evident that operation of the lever 61 will cause amovement of the cup from over the opening 68 to let the water 45discharge from the tub through the drain opening. The lower edges of thecup 66 may carry the sealing gasket 69 to prevent leakage of the waterduring a washing operation.

The end thrust of the motor shaft 33 is taken up by the ball '70 uponwhich the end of the shaft is mounted, the ball being held in positionthrough the medium of the plug 13 which is threaded as at 71 interiorlyof the sleeve 72..

Suitable means are provided for the oiling of "the motor, and the motorhousing 16 is ventilated through the medium of a suitable conduit '73which leads therefrom to a suitable plug opening '74 in the cover 22, itbeing understood, of course, that the electric wires from the motorextend up through the conduit 73 and terminate in the plug 74 to whichis connected any source of electric power terminating in a plug. Theconduit 73 is made of waterproof material.

The main frame 9 is also provided with the corner pieces 75 definingpockets for cups, silver and other eating utensils which cannot besupported in the dish rack, this frame '75 being made of heavy wire andbeing secured to the main frame 9 and closed with a suitable mesh '76 toprevent the utensils from falling out or getting in the way of theimpeller.

It is evident that the impeller operating under high speed, will takethe water in at its lowermost end which is submerged and will project itin streams upwardly at high pressure and in fast moving jets so that thedishes are thoroughly cleansed by the impingement of the water thereonand are quickly and effectively cleansed.

It is quite evident that the motor may be oiled in any manner desiredand the dish racks 27 and 19 may be vulcanized with a rubber covering,if so desired. It is to be noted that the motor is secured to thehousing by suitable screws 16A which engage the motor casing and'holdthe motor in position. Also, the dish holding frame and main frame maybe made in separate units if desired. A further function of the sleeve'72 is that it provides a bearing for the motor shaft and the impeller,and ball 70 constitutes a thrust bearing for the shaft of the motor, theball resting freely on the plug 13 and centering itself under the motorshaft at which point suitable lubrication is provided.

It is evident, therefore, that I have provided a washing machineconsisting of main and auxiliary frames in the former of which the motorhousing and impeller are supported as well as the cover and itsassociated parts which constitute a closure for a tub or tank in whichthe washing machine is positioned, the machine itself being adaptablefor use in an ordinary wash tub thus eliminating expense to thepurchaser in buying a casing especially fitted for the washing machine.

My invention further provides for a washing machine which in taking itsplace in a wash tub does not occupy valuable space and can be quicklyand easily removed when the tub is to be used for the washing of clothesor other purposes.

My invention is not to be restricted to the precise details ofconstruction shown since various changes and modifications may be madetherein without departing from the scope of the invention or sacrificingthe advantages derived from its use.

What I claim is:-

1. The combination with a receptacle provided with a drain of a dishwashing machine removably positioned in the receptacle, comprising anopen wire frame, dish supporting members on said frame, a motor housingin the frame, a motor operated water projector, a cover supported by theframe, and a drain closure supported from said cover.

2. The combination with a receptacle provided with a drain of a dishwashing machine removably positioned in the receptacle, comprising anopen wire frame, rings on the frame, radially disposed dish holdingmembers on said rings, said members cooperating to support a dish at theedge and inwardly from said edge, a cover on the frame, and a drainclosure supported by and operable from said cover.

3. The combination with a receptacle having a drain of a dish washingmachine removably positioned in the receptacle, comprising a main framearranged to rest on the bottom of the receptacle, dish holders on theframe radially disposed about the vertical axis of the machine, a coveron the frame providing a closure for the receptacle, a lid hinged tosaid cover, a drain closure, and means for supporting and operating saidclosure from said cover.

4. The combination with a receptacle having a drain of a dish washingmachine removably positioned in the receptacle, comprising a main frame,a top for the machine constituting a cover for the receptacle, a hollowdrain closure, an opening in the upper part of said closure constitutinga water overflow and a lever supported by the cover for operating thedrain closure.

5. The combination with a receptacle having a drain, of a dish washingmachine comprising an open frame, a water impeller, means for operatingthe impeller, dish supports on the frame, v

a cover for the receptacle supported on the frame, a lid hinged to thecover, a drain stopper, and means carried by the cover for supportingand manipulating said stopper.

l ARTHUR G. KOHLER. [as]

